支气管动脉CT血管学在支气管动脉栓塞之前"三低"辐射剂量:可行性研究
1Department of Radiology, Hebei Medical University, No. 361 Zhongshan East Road, Shijiazhuang, 050011, Hebei, China.
Clinical radiology
|October 9, 2023
概括
一个"三低"剂量计算断层扫描血管造影 (CTA) 协议显著减少了支气管动脉栓塞 (BAE) 准备的辐射和对比剂体积. 这种低剂量的CTA保持了诊断质量,使其成为BMI<30 kg/m2的患者可行的替代方案.
科学领域:
- 放射学 放射学是一门学科.
- 医疗成像医学成像
- 干预性放射学 干预性放射学
背景情况:
- 支气管动脉栓塞 (BAE) 是治疗血栓塞的一个常见程序.
- 常规剂量计算机断层扫描血管造影 (CTA) 用于手术前的规划.
- 在医学成像中需要剂量降低策略.
研究的目的:
- 评估"三低"剂量CTA协议 (低管电压,低管电流,低对比剂体积) 的可行性,用于BAE前的规划.
- 为了比较三重低剂量CTA的诊断质量和辐射剂量与常规剂量CTA.
主要方法:
- 一项前性研究,涉及60名BMI<30 kg/m2的患者,接受支气管动脉CTA.
- 患者被分为两组:A组 (三次低剂量:100kVp,100mAs,50mlCM) 和B组 (常规剂量:120kVp,ACTM,80mlCM).
- 评估了图像质量指标 (衰减,噪音,SNR,CNR),主观得分和有效辐射剂量.
主要成果:
- 三重低剂量方案 (A组) 与常规剂量 (B组) 相比,辐射剂量减少了79.7%,对比中等体积减少了37.5%.
- 胸前动脉CT衰减在A组中更高,而图像噪声更高,SNR/CNR较低.
- 两个组之间的主观图像质量和可追溯性得分是可比的.
结论:
- 在接受BAE前评估的BMI<30 kg/m2的患者中",三低"剂量CTA协议是可行的.
- 该协议显著减少了辐射暴露和对比剂体积,同时保持了诊断价值.
- 它提供了一种更安全,更有效的替代方案,用于 BAE 准备的常规剂量 CTA.
更多相关视频
11:38Voluntary Breath-hold Technique for Reducing Heart Dose in Left Breast Radiotherapy
Published on: July 3, 2014
46.8K
09:49Dual-phase Cone-beam Computed Tomography to See, Reach, and Treat Hepatocellular Carcinoma during Drug-eluting Beads Transarterial Chemo-embolization
Published on: December 2, 2013
10.4K
相关概念视频
01:13Radiological Investigation III: Pulmonary Angiogram and PET Scan
98
Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
98
01:28Imaging Studies for Cardiovascular System V: CT
22
Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
22